Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import macro from 'vtk.js/Sources/macros';
import vtkWebGPUFullScreenQuad from 'vtk.js/Sources/Rendering/WebGPU/FullScreenQuad';
import vtkWebGPUOpaquePass from 'vtk.js/Sources/Rendering/WebGPU/OpaquePass';
import vtkWebGPUOrderIndepenentTranslucentPass from 'vtk.js/Sources/Rendering/WebGPU/OrderIndependentTranslucentPass';
import vtkWebGPURenderEncoder from 'vtk.js/Sources/Rendering/WebGPU/RenderEncoder';
import vtkWebGPUVolumePass from 'vtk.js/Sources/Rendering/WebGPU/VolumePass';
import vtkRenderPass from 'vtk.js/Sources/Rendering/SceneGraph/RenderPass';
import vtkWebGPUSampler from 'vtk.js/Sources/Rendering/WebGPU/Sampler';
import vtkWebGPUTextureView from 'vtk.js/Sources/Rendering/WebGPU/TextureView';
const finalBlitFragTemplate = `
//VTK::Mapper::Dec
//VTK::TCoord::Dec
//VTK::RenderEncoder::Dec
//VTK::IOStructs::Dec
@fragment
fn main(
//VTK::IOStructs::Input
)
//VTK::IOStructs::Output
{
var output: fragmentOutput;
var computedColor: vec4<f32> = clamp(textureSampleLevel(opaquePassColorTexture, finalPassSampler, input.tcoordVS, 0.0),vec4<f32>(0.0),vec4<f32>(1.0));
//VTK::RenderEncoder::Impl
return output;
}
`;
// ----------------------------------------------------------------------------
function vtkForwardPass(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkForwardPass');
// this pass implements a forward rendering pipeline
// if both volumes and opaque geometry are present
// it will mix the two together by capturing a zbuffer
// first
publicAPI.traverse = (viewNode, parent = null) => {
if (model.deleted) {
return;
}
// we just render our delegates in order
model._currentParent = parent;
// build
publicAPI.setCurrentOperation('buildPass');
viewNode.traverse(publicAPI);
if (!model.opaquePass) {
model.opaquePass = vtkWebGPUOpaquePass.newInstance();
}
const numlayers = viewNode.getRenderable().getNumberOfLayers();
// iterate over renderers
const renderers = viewNode.getChildren();
for (let i = 0; i < numlayers; i++) {
for (let index = 0; index < renderers.length; index++) {
const renNode = renderers[index];
const ren = viewNode.getRenderable().getRenderers()[index];
if (ren.getDraw() && ren.getLayer() === i) {
// check for both opaque and volume actors
model.opaqueActorCount = 0;
model.translucentActorCount = 0;
model.volumes = [];
publicAPI.setCurrentOperation('queryPass');
renNode.traverse(publicAPI);
publicAPI.setCurrentOperation('cameraPass');
renNode.traverse(publicAPI);
// always do opaque pass to get a valid color and zbuffer, even if empty
model.opaquePass.traverse(renNode, viewNode);
// optional translucent pass
if (model.translucentActorCount > 0) {
if (!model.translucentPass) {
model.translucentPass =
vtkWebGPUOrderIndepenentTranslucentPass.newInstance();
}
model.translucentPass.setColorTextureView(
model.opaquePass.getColorTextureView()
);
model.translucentPass.setDepthTextureView(
model.opaquePass.getDepthTextureView()
);
model.translucentPass.traverse(renNode, viewNode);
}
// optional volume pass
if (model.volumes.length > 0) {
if (!model.volumePass) {
model.volumePass = vtkWebGPUVolumePass.newInstance();
}
model.volumePass.setColorTextureView(
model.opaquePass.getColorTextureView()
);
model.volumePass.setDepthTextureView(
model.opaquePass.getDepthTextureView()
);
model.volumePass.setVolumes(model.volumes);
model.volumePass.traverse(renNode, viewNode);
}
// blit the result into the swap chain
publicAPI.finalPass(viewNode, renNode);
}
}
}
};
publicAPI.finalPass = (viewNode, renNode) => {
if (!model._finalBlitEncoder) {
publicAPI.createFinalBlitEncoder(viewNode);
}
model._finalBlitOutputTextureView.createFromTextureHandle(
viewNode.getCurrentTexture(),
{ depth: 1, format: viewNode.getPresentationFormat() }
);
model._finalBlitEncoder.attachTextureViews();
model._finalBlitEncoder.begin(viewNode.getCommandEncoder());
renNode.scissorAndViewport(model._finalBlitEncoder);
model._fullScreenQuad.prepareAndDraw(model._finalBlitEncoder);
model._finalBlitEncoder.end();
};
publicAPI.createFinalBlitEncoder = (viewNode) => {
model._finalBlitEncoder = vtkWebGPURenderEncoder.newInstance({
label: 'forwardPassBlit',
});
model._finalBlitEncoder.setDescription({
colorAttachments: [
{
view: null,
loadOp: 'load',
storeOp: 'store',
},
],
});
model._finalBlitEncoder.setPipelineHash('fpf');
model._finalBlitEncoder.setPipelineSettings({
primitive: { cullMode: 'none' },
fragment: {
targets: [
{
format: viewNode.getPresentationFormat(),
blend: {
color: {
srcFactor: 'src-alpha',
dstFactor: 'one-minus-src-alpha',
},
alpha: { srcfactor: 'one', dstFactor: 'one-minus-src-alpha' },
},
},
],
},
});
model._fsqSampler = vtkWebGPUSampler.newInstance({
label: 'finalPassSampler',
});
model._fsqSampler.create(viewNode.getDevice(), {
minFilter: 'linear',
magFilter: 'linear',
});
model._fullScreenQuad = vtkWebGPUFullScreenQuad.newInstance();
model._fullScreenQuad.setDevice(viewNode.getDevice());
model._fullScreenQuad.setPipelineHash('fpfsq');
model._fullScreenQuad.setTextureViews([
model.opaquePass.getColorTextureView(),
]);
model._fullScreenQuad.setAdditionalBindables([model._fsqSampler]);
model._fullScreenQuad.setFragmentShaderTemplate(finalBlitFragTemplate);
model._finalBlitOutputTextureView = vtkWebGPUTextureView.newInstance();
model._finalBlitEncoder.setColorTextureView(
0,
model._finalBlitOutputTextureView
);
};
publicAPI.incrementOpaqueActorCount = () => model.opaqueActorCount++;
publicAPI.incrementTranslucentActorCount = () =>
model.translucentActorCount++;
publicAPI.addVolume = (volume) => {
model.volumes.push(volume);
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
opaqueActorCount: 0,
translucentActorCount: 0,
volumes: null,
opaqueRenderEncoder: null,
translucentPass: null,
volumePass: null,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
vtkRenderPass.extend(publicAPI, model, initialValues);
macro.setGet(publicAPI, model, [
'opaquePass',
'translucentPass',
'volumePass',
]);
// Object methods
vtkForwardPass(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkForwardPass');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
|